NL1012764C1 - Construction serving as undercarriage and suspension for electrically propelled means of transport. - Google Patents
Construction serving as undercarriage and suspension for electrically propelled means of transport. Download PDFInfo
- Publication number
- NL1012764C1 NL1012764C1 NL1012764A NL1012764A NL1012764C1 NL 1012764 C1 NL1012764 C1 NL 1012764C1 NL 1012764 A NL1012764 A NL 1012764A NL 1012764 A NL1012764 A NL 1012764A NL 1012764 C1 NL1012764 C1 NL 1012764C1
- Authority
- NL
- Netherlands
- Prior art keywords
- movement
- construction
- driven wheel
- suspension
- undercarriage
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G1/00—Suspensions with rigid connection between axle and frame
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/04—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven
- A61G5/041—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs motor-driven having a specific drive-type
- A61G5/042—Front wheel drive
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1078—Parts, details or accessories with shock absorbers or other suspension arrangements between wheels and frame
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/10—Parts, details or accessories
- A61G5/1089—Anti-tip devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G21/00—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces
- B60G21/02—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected
- B60G21/04—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically
- B60G21/05—Interconnection systems for two or more resiliently-suspended wheels, e.g. for stabilising a vehicle body with respect to acceleration, deceleration or centrifugal forces permanently interconnected mechanically between wheels on the same axle but on different sides of the vehicle, i.e. the left and right wheel suspensions being interconnected
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G3/00—Resilient suspensions for a single wheel
- B60G3/02—Resilient suspensions for a single wheel with a single pivoted arm
- B60G3/12—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially parallel to the longitudinal axis of the vehicle
- B60G3/14—Resilient suspensions for a single wheel with a single pivoted arm the arm being essentially parallel to the longitudinal axis of the vehicle the arm being rigid
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
- A61G5/00—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs
- A61G5/06—Chairs or personal conveyances specially adapted for patients or disabled persons, e.g. wheelchairs with obstacle mounting facilities, e.g. for climbing stairs, kerbs or steps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2200/00—Indexing codes relating to suspension types
- B60G2200/10—Independent suspensions
- B60G2200/13—Independent suspensions with longitudinal arms only
- B60G2200/132—Independent suspensions with longitudinal arms only with a single trailing arm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/40—Auxiliary suspension parts; Adjustment of suspensions
- B60G2204/421—Pivoted lever mechanisms for mounting suspension elements, e.g. Watt linkage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
- B60G2204/82—Interactive suspensions; arrangement affecting more than one suspension unit left and right unit on same axle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2204/00—Indexing codes related to suspensions per se or to auxiliary parts
- B60G2204/80—Interactive suspensions; arrangement affecting more than one suspension unit
- B60G2204/83—Type of interconnection
- B60G2204/8302—Mechanical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Handcart (AREA)
- Auxiliary Devices For And Details Of Packaging Control (AREA)
- Carriages For Children, Sleds, And Other Hand-Operated Vehicles (AREA)
- Automatic Cycles, And Cycles In General (AREA)
Abstract
Description
Korte aanduiding: constructie dienende als onderstel en wielophanging voor electrisch voortbewogen vervoersmiddelen.Short designation: construction serving as undercarriage and suspension for electrically propelled means of transport.
De uitvinding heeft betrekking op een constructie dienende als onderstel van, en bevestigingspunten 5 van wielen aan electrisch voortbewogen vervoersmiddelen, in het bijzonder rolstoelen.The invention relates to a construction serving as the undercarriage of and attachment points of wheels to electrically propelled means of transport, in particular wheelchairs.
De electrisch voortbewogen rolstoel is een algemeen voortkomend hulpmiddel om mensen die niet kunnen lopen een vorm van mobiliteit te kunnen bieden. Vanwege de beperkte bewegingvrijheid van de gebruiker is het van het grootste belang dat, naast vele niet nader te noemen zaken, de rolstoel een stabiel rijgedrag heeft en een zodanige contact met alle soorten ondergrond dat tractie 10 gewaarborgd blijft. De wielen van een electrische rolstoel staan dicht op elkaar, en zitten bevestigd aan een stabiel stalen frame. Als oneffenheden in de ondergrond niet langs mechanische weg gecompenseerd zouden worden, zou het rijden slechts met de grootste moeite gaan.The electrically propelled wheelchair is a common tool to offer people who cannot walk a form of mobility. Due to the limited freedom of movement of the user, it is of the utmost importance that, in addition to many undisclosed matters, the wheelchair has a stable driving behavior and such contact with all types of ground that traction 10 is guaranteed. The wheels of an electric wheelchair are close together, and are attached to a stable steel frame. If unevenness in the ground were not compensated mechanically, driving would be difficult.
Echter deze mechanismen zijn vaak complex, en daardoor storingsgevoelig, en duur, terwijl het voor een hulpmiddel beschikbaar budget steeds kleiner wordt.However, these mechanisms are often complex, and therefore prone to failure, and expensive, while the budget available for a resource is getting smaller.
15 De onderhavige uitvinding beoogt een oplossing te bieden voor bovenstaande problemen.The present invention aims to solve the above problems.
De uitvinding zal nu worden toegelicht aan de hand van tekeningen waarin nummers steeds naar dezelfde onderdelen refereren en waarin:The invention will now be elucidated on the basis of drawings in which numbers always refer to the same parts and in which:
Figuur la en lb vereenvoudigde weergaven zijn van een electrisch voortbewogen rolstoel zonder enige vorm van mechanisch onderstel en wielophanging, respectievelijk op vlakke weg en met een 20 achterwiel op een obstakel.Figures 1a and 1b are simplified representations of an electrically propelled wheelchair without any kind of mechanical undercarriage and suspension, respectively on a flat road and with a rear wheel on an obstacle.
Figuur 2 a en 2b vereenvoudigde weergaven zijn van een electrisch voortbewogen rolstoel met mechanisch onderstel en wielophanging volgens de uitvinding, in dezelfde omstandigheden.Figures 2a and 2b are simplified representations of an electrically propelled wheelchair with a mechanical chassis and suspension according to the invention, in the same conditions.
Figuur 3a en 3b vereenvoudigde weergaven zijn van een gunstige uitvoeringsvorm van de in uitvinding voorgestelde constructie, in isometrisch aanzicht.Figures 3a and 3b are simplified representations of an advantageous embodiment of the construction proposed in the invention, in an isometric view.
2525
In Figuur la is rolstoel 1 gezien op de aangedreven wielen in een vereenvoudigde weergave. Voorzien zijn vier wielen, de aangedreven wielen 2 en 2’, en de kleinere zwenkwielen 3 en 3’. Gebruikelijk is dat de aandrijving en het sturen gebeurt door het bedienen van twee electromotoren, (niet getekend) voor elk aangedreven wiel een. Deze motoren zijn direct voorzien van een as voor 30 bevestiging van het wiel. Door een zeer nauwkeurige electronische bediening van de motoren is de rolstoel te besturen. Deze electronica meet met korte tussenpozen ook de weerstand die elke motor ondervind en past het geleverd vermogen daarop aan. In figuur la en lb is de rolstoel 1 niet voorzien van enige vorm van mechanisch onderstel voor wielophanging. Zou, zoals in figuur lb getekend, een aangedreven wiel 2’ op een hobbel 5 komen te staan, dan komt het andere 35 aangedreven wiel 2 los van de grond 4. Wiel 2 heeft de grip op de ondergrond 4 verloren, terwijl wiel 2’ nog voldoende tractie heeft. Hierdoor gaat de rolstoel een bocht inzetten. Dan gaat de electronica het gebrek aan weerstand compenseren en wordt de bocht afgebroken.In Figure 1a, wheelchair 1 is seen on the driven wheels in a simplified representation. Equipped with four wheels, the driven wheels 2 and 2 ", and the smaller castors 3 and 3". It is usual for the drive and steering to be done by operating two electric motors (not shown) for each driven wheel. These motors are directly equipped with a shaft for mounting the wheel. The wheelchair can be controlled by a very precise electronic control of the motors. These electronics also measure the resistance experienced by each motor at short intervals and adjust the power output accordingly. In Figures 1a and 1b, the wheelchair 1 is not provided with any form of mechanical undercarriage for suspension. Should, as shown in figure 1b, one driven wheel 2 'end up on a bump 5, the other 35 driven wheel 2 would come off the ground 4. Wheel 2 has lost its grip on the ground 4, while wheel 2' still has enough traction. This causes the wheelchair to initiate a bend. Then the electronics will compensate for the lack of resistance and the bend will be broken off.
»101276 4 2»101276 4 2
Het geheel resulteert in een onmogelijk rijgedrag. Eveneens is in figuur lb zichtbaar dat de stand van de stoel 6 niet meer horizontaal is, waardoor het zwaartepunt van de rolstoel met gebruiker veranderd, wat gevaar voor omvallen kan betekenen.The whole results in an impossible driving behavior. It is also visible in figure 1b that the position of the chair 6 is no longer horizontal, as a result of which the center of gravity of the wheelchair with the user changes, which can mean a risk of tipping over.
In figuur 2a en 2b is een gelijke situatie getekend, echter is de rolstoel 11 nu voorzien van een 5 mechanisch onderstel volgens uitvinding. Zoals in figuur 2b zichtbaar is blijven bij een hobbel 15 beide wielen contact met de grond maken, en blijft de stand van de stoel 16 horizontaal. Ook zichtbaar is dat de hoogte van de stoel 16 ten opzichte van de vlakke grond 14 vermeerderd is. Daaruit valt op te maken dat het compenseren van de hobbel 15 niet slechts bereikt is door het “inveren” van wiel 12’. Theoretisch zou dit per wiel inveren een oplossing zijn, ware het niet dat de 10 zwenkwielen 13 en 13’ dan op soortgelijke wijze zouden moeten kunnen functioneren. Dit is slechts met zeer ingewikkelde constructies te bereiken, de onafhankelijk geveerde wielen, zoals bekend uit de automobielindustrie.Figures 2a and 2b show a similar situation, but the wheelchair 11 is now provided with a mechanical chassis according to the invention. As can be seen in figure 2b, with a bump 15, both wheels remain in contact with the ground, and the position of the chair 16 remains horizontal. It is also visible that the height of the chair 16 relative to the flat ground 14 has increased. From this it can be concluded that the compensation of the bump 15 is not only achieved by "springing in" wheel 12 ". Theoretically, this would be a solution by wheel suspension, were it not for the 10 castors 13 and 13 'to function in a similar way. This can only be achieved with very complex constructions, the independently suspended wheels, as known from the automotive industry.
In figuur 3a en 3b is een vereenvoudigde weergave getekend van een gunstige uitvoering in staal 15 van het onderstel 50 volgens uitvinding. In hoofdzaak is zichtbaar een plaatstalen bak 22, met aan een zijde 25 twee armen 23 en 23’ waaraan bevestigd twee zwenkwielen 24 en 24’ De tegenoverliggende zijde 26 is in deze uitvoering grotendeels open, en daardoor geschikt voor het in-en uitlaten van accu’s, (niet getekend) Aan de bovenkant van zijde 26 bevindt zich een stevige stalen buis 27, waardoor de constructie zoals tot nu toe beschreven een sterk frame 30 vormt.Figures 3a and 3b show a simplified representation of a favorable embodiment in steel 15 of the chassis 50 according to the invention. Mainly visible is a sheet steel tray 22, with on one side 25 two arms 23 and 23 'to which are attached two swivel wheels 24 and 24'. The opposite side 26 in this embodiment is largely open, and therefore suitable for the inlet and outlet of batteries. (not shown) At the top of side 26 is a sturdy steel tube 27, as a result of which the construction as described so far forms a strong frame 30.
20 Door of aan buis 27 is in horizontale richting een as 28 bevestigd, haaks op het vlak 26 waaraan een tweede stevige buis 29 is opgenomen, zodanig dat deze kan draaien in een verticaal vlak.A shaft 28 is attached in horizontal direction through or to tube 27, at right angles to the plane 26 on which a second sturdy tube 29 is received, such that it can rotate in a vertical plane.
Deze draaibeweging is in meest gunstige uitvoering gedempt of geveerd, rond de as 28 of ergens tussen frame 30 en buis 29. Een uitvoering is met voordeel zodanig dat buis 29 past binnen een als open profiel uitgevoerde buis 27, en de beweging veilig en onzichtbaar geschiedt.Most advantageously, this rotary movement is damped or sprung, around the shaft 28 or somewhere between frame 30 and tube 29. An embodiment is advantageously such that tube 29 fits within an open profile tube 27, and the movement takes place safely and invisibly. .
25 Haaks op en bevestigd aan de zijden 31 en 32 bevinden zich draaipunten 33 en 34, hoofdzakelijk horizontaal. In deze uitvoeringsvorm zijn aan de binnenzijde van het frame 30 aan deze draaipunten twee armen 35 en 36 voorzien van een zodanige afmeting dat ze uit de grotendeels open zijde 26 steken. Aan deze armen 35 en 36 zijn voorzieningen aangebracht voor de montage van twee electromotoren (niet getekend) met bijbehorende opnamepunten 37 en 38 voor wielen 39.Perpendicular to and attached to sides 31 and 32 are pivot points 33 and 34, mainly horizontal. In this embodiment, on the inner side of the frame 30 at these pivot points, two arms 35 and 36 are dimensioned such that they protrude from the largely open side 26. Provisions are made on these arms 35 and 36 for mounting two electric motors (not shown) with associated receiving points 37 and 38 for wheels 39.
30 Tussen de uiteinden 40 en 41 van armen 35 en 36, en de uiteinden 42 en 43 van buis 29 zijn verbindingen 44 en 45 voorzien. Deze verbindingen 44 en 45 zijn met voordeel voorzien van veer-’ en dempingsmiddelen, maar kunnen ook star zijn. De bevestiging van verbindingen 44 en 45 is in gunstige uitvoering voorzien van kogelkoppelingen 46, zodanig dat een zekere draaiing in alle richtingen mogelijk is, maar hiervoor zijn meerdere alternatieve oplossingen bekend en in de handel 35 verkrijgbaar.Connections 44 and 45 are provided between the ends 40 and 41 of arms 35 and 36, and the ends 42 and 43 of tube 29. These connections 44 and 45 are advantageously provided with spring and damping means, but can also be rigid. The fastening of connections 44 and 45 is advantageously provided with ball couplings 46, such that a certain rotation in all directions is possible, but several alternative solutions are known and commercially available for this.
1012764 31012764 3
In figuur 3b is zichtbaar wat er gebeurt als een wiel (hier niet getekend) een denkbeeldige hobbel ontmoet. Het wiel met electromotor en bevestigingspunt 38, zal omhoog gaan, en arm 36 draaien om draaipunt 34. Deze beweging wordt door middel van verbinding 44 doorgegeven aan buis 27. Die draait op zijn beurt om draaipunt 28 zoals bij een wip gebeurd, waardoor uiteinde 43 van buis 5 27 een neerwaartse beweging maakt, evenals wiel 39, en arm 35. Vanzelfsprekend gebeurt bij een omhoog gaande beweging van wiel 39 het omgekeerde.Figure 3b shows what happens when a wheel (not shown here) meets an imaginary bump. The wheel with electric motor and mounting point 38 will rise, and arm 36 will rotate around pivot 34. This movement is passed through tube 44 to tube 27. This in turn revolves around pivot 28 as happens with a seesaw, so that end 43 tube 5 27 makes a downward movement, as does wheel 39, and arm 35. Obviously, the upward movement of wheel 39 takes place in reverse.
Bij het omhooggaan van een der zwenkwielen 24 of 24’ zal frame 30 zodanig kantelen dat het diagonaal er tegenover liggend wiel eveneens omhoog beweegt ten opzichte van frame 30.When one of the swivel wheels 24 or 24 is raised, frame 30 will tilt such that the diagonally opposite wheel also moves upwards relative to frame 30.
Indien verbindingen 44 en 45 voorzien zijn van veren en dempingsmiddelen, volgens algemeen 10 gangbare principes zullen deze onder het gewicht van de gebruiker beiden tegelijk inveren, waardoor een hoge mate van comfort bereikt wordt. Met voordeel zijn deze veerconstructies op spanning te brengen om gewicht verschillen tussen gebruikers te compenseren.If connections 44 and 45 are provided with springs and damping means, according to generally accepted principles, they will both spring under the weight of the user simultaneously, whereby a high degree of comfort is achieved. These spring constructions can advantageously be tensioned to compensate for weight differences between users.
15 •101276415 • 1012764
Claims (4)
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1012764A NL1012764C1 (en) | 1999-08-02 | 1999-08-02 | Construction serving as undercarriage and suspension for electrically propelled means of transport. |
NL1015750A NL1015750C2 (en) | 1999-08-02 | 2000-07-20 | Undercarriage, especially for wheelchair, has lifting and lowering mechanism coupled to driven wheels to compensate for uneven ground |
AT00202610T ATE266371T1 (en) | 1999-08-02 | 2000-07-20 | BASE FOR VEHICLE AND WHEELCHAIR EQUIPPED WITH SUCH BASE |
DK00202610T DK1078622T3 (en) | 1999-08-02 | 2000-07-20 | Frame for a vehicle and wheelchair equipped with such a frame |
DE60010595T DE60010595T2 (en) | 1999-08-02 | 2000-07-20 | Undercarriage for vehicle and wheelchair equipped with such undercarriage |
EP00202610A EP1078622B1 (en) | 1999-08-02 | 2000-07-20 | Undercarriage for a vehicle, and wheelchair provided with such undercarriage |
NL1018489A NL1018489C2 (en) | 1999-08-02 | 2001-07-09 | Underframe, particularly for wheelchair, has at least two pivot wheels opposite each other, pivotable around vertical axis and fixed via arms to a structure belonging to the under frame |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL1012764 | 1999-08-02 | ||
NL1012764A NL1012764C1 (en) | 1999-08-02 | 1999-08-02 | Construction serving as undercarriage and suspension for electrically propelled means of transport. |
Publications (1)
Publication Number | Publication Date |
---|---|
NL1012764C1 true NL1012764C1 (en) | 1999-09-14 |
Family
ID=19769689
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL1012764A NL1012764C1 (en) | 1999-08-02 | 1999-08-02 | Construction serving as undercarriage and suspension for electrically propelled means of transport. |
NL1015750A NL1015750C2 (en) | 1999-08-02 | 2000-07-20 | Undercarriage, especially for wheelchair, has lifting and lowering mechanism coupled to driven wheels to compensate for uneven ground |
NL1018489A NL1018489C2 (en) | 1999-08-02 | 2001-07-09 | Underframe, particularly for wheelchair, has at least two pivot wheels opposite each other, pivotable around vertical axis and fixed via arms to a structure belonging to the under frame |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL1015750A NL1015750C2 (en) | 1999-08-02 | 2000-07-20 | Undercarriage, especially for wheelchair, has lifting and lowering mechanism coupled to driven wheels to compensate for uneven ground |
NL1018489A NL1018489C2 (en) | 1999-08-02 | 2001-07-09 | Underframe, particularly for wheelchair, has at least two pivot wheels opposite each other, pivotable around vertical axis and fixed via arms to a structure belonging to the under frame |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP1078622B1 (en) |
AT (1) | ATE266371T1 (en) |
DE (1) | DE60010595T2 (en) |
DK (1) | DK1078622T3 (en) |
NL (3) | NL1012764C1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1015070C2 (en) * | 2000-05-01 | 2001-11-02 | Movingpeople Net Internat B V | Wheelchair and chassis for a wheelchair. |
US11207932B2 (en) * | 2019-12-23 | 2021-12-28 | Zhejiang Taotao Vehicles Co., Ltd. | Vehicle suspension system and vehicle |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1020705C2 (en) * | 2002-05-29 | 2003-12-02 | Vimili Holding B V | Wheel suspension for a motorized vehicle for the disabled. |
GB201210713D0 (en) * | 2012-06-16 | 2012-08-01 | Wizz Mobility Ltd | Improvements in and relating to attendant propelled vehicles |
ITRE20130044A1 (en) * | 2013-06-14 | 2014-12-15 | Bcs Spa | SELF PROPELLED VEHICLE FROM WORK |
NL2018169B1 (en) * | 2017-01-13 | 2018-07-25 | Dietz Power B V | Wheelchair |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3525534A (en) * | 1968-10-10 | 1970-08-25 | Herman J Madler | Vehicle frame |
USRE35707E (en) * | 1983-03-29 | 1997-12-30 | Aisin Seiki Kabushiki Kaisha | Apparatus for driving medical appliances |
AU583432B2 (en) * | 1985-10-31 | 1989-04-27 | Roller Chair Pty Ltd | Wheelchair frame |
AU604321B2 (en) * | 1987-05-21 | 1990-12-13 | Avion Engineering Pty. Ltd. | Electric wheelchair |
NL9300063A (en) * | 1993-01-13 | 1994-08-01 | Ligtvoet Products Bv | Wheelchair. |
NL1002601C2 (en) * | 1995-03-13 | 1996-09-18 | Mattheus Caspar Maria Meulendi | Wheelchair for travelling over roads with bumps - has undercarriage having two parallel arms having rotatable wheels near their ends which are pivotally interconnected by cross-beam |
US5772237A (en) * | 1996-05-21 | 1998-06-30 | Teftec Corporation | Suspension system for powered wheelchair |
CA2249515A1 (en) * | 1998-10-06 | 2000-04-06 | Gerald Thomas Griggs | Motorized chair base |
-
1999
- 1999-08-02 NL NL1012764A patent/NL1012764C1/en not_active IP Right Cessation
-
2000
- 2000-07-20 DE DE60010595T patent/DE60010595T2/en not_active Expired - Fee Related
- 2000-07-20 NL NL1015750A patent/NL1015750C2/en not_active IP Right Cessation
- 2000-07-20 DK DK00202610T patent/DK1078622T3/en active
- 2000-07-20 AT AT00202610T patent/ATE266371T1/en not_active IP Right Cessation
- 2000-07-20 EP EP00202610A patent/EP1078622B1/en not_active Expired - Lifetime
-
2001
- 2001-07-09 NL NL1018489A patent/NL1018489C2/en not_active IP Right Cessation
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1015070C2 (en) * | 2000-05-01 | 2001-11-02 | Movingpeople Net Internat B V | Wheelchair and chassis for a wheelchair. |
EP1151737A2 (en) * | 2000-05-01 | 2001-11-07 | Movingpeople.net International B.V. | Wheelchair and undercarriage for a wheelchair |
EP1151737A3 (en) * | 2000-05-01 | 2002-05-08 | Movingpeople.net International B.V. | Wheelchair and undercarriage for a wheelchair |
US11207932B2 (en) * | 2019-12-23 | 2021-12-28 | Zhejiang Taotao Vehicles Co., Ltd. | Vehicle suspension system and vehicle |
Also Published As
Publication number | Publication date |
---|---|
NL1018489A1 (en) | 2001-07-23 |
NL1015750A1 (en) | 2001-02-05 |
EP1078622A2 (en) | 2001-02-28 |
NL1015750C2 (en) | 2001-07-16 |
ATE266371T1 (en) | 2004-05-15 |
DK1078622T3 (en) | 2004-09-13 |
NL1018489C2 (en) | 2001-09-28 |
EP1078622A3 (en) | 2001-12-12 |
EP1078622B1 (en) | 2004-05-12 |
DE60010595D1 (en) | 2004-06-17 |
DE60010595T2 (en) | 2005-05-19 |
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Legal Events
Date | Code | Title | Description |
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SD | Assignments of patents |
Owner name: WHEELBASE PRODUCTS B.V. |
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VD1 | Lapsed due to non-payment of the annual fee |
Effective date: 20040301 |